DE1526011A1 - Actuating device for a gas oven - Google Patents

Description

DB. ERICH NEDGEBAUER PATENT ADVOCATE

MUNICH 26, POSTFACH31 July 28, 1966

ZWEIBRÜCKEN8TRAS8B tt “, ^ ο TELEFOIISUItI IA-168J5 Description

to the patent application

Inmelderins Metaalwarenfabriek Joh. Th. Benraad H.T. in Terborg (Netherlands) Priority: to »August 5, 1965 Kr. 6510175. Title χ Actuator for a gas oven.

The invention relates to an actuator Gas furnace siit at least two burners, which are optionally combined sur Effect can be brought to germinate bit with the help of a single igniter burner, which the gas is fed through a thermally secured main valve.

Such devices are already known.

With the use of several burners, which boldly burn at least in part individually, xm to enlarge the control range, difficulties arise if one wants to obtain a simple operation and yet a reliable charge and an impeccable protection against the flow of unburned gas "

With the usual guard arrangements, which either “it is a metal, oän

element or another temperature-sensitive element /

with one subject, the closing of the gas supply takes place with one There was some hesitation after the ignition of the ignition flame. Becoming this

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Delay peslode is an outflow of unburned gas from the Burners possible.

A better solution is the one where a latch prevents the main gas valve from opening again during the delay period mentioned will. However, this construction is delicate and not special simple,

The invention aims to be particularly simple and reliable To provide solution to this problem.

According to the invention, this is achieved in that the pilot flame of the Pilot burner cooperates with one of the burners, the first burner, which is always ignited first when igniting the stove and as a pilot burner can work for the other burners and at the same time controls the thermal fuse of the main valve. This form of execution makes it possible with certainty a reliable ignition of every single one Brenner, wShrand the first burner as a small burner for the Can serve small position of the furnace, so that the whole device is particularly simple. On the other hand, the first burner is automatically in Activity held and. only when you delete this burner will that Main valve are closed, whereby the pilot flame no longer receives any gas and is thus extinguished. Leakage of unburned gas is caused by certainly avoided this training.

The first burner, which simultaneously controls the thermal protection, is the burner with the comparatively lowest output. The first burner can then be used as a small burner at the same time, while doing this at the same time, even if this first burner is not immediately ignites, the amount of unburned gas flowing out remains so low that bel-n sudden ignition no nuisance or dangerous explosions can take place.

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To extinguish the burner, it is advisable to supply gas to the the first burner, except via the secured main gas valve, is still looking via an additional separate gas shut-off valve. This makes it possible to extinguish the small burner and, in addition, a protection against the escape of unburned gas is obtained if that Main valve would be opened accidentally.

The device according to the invention is also expediently designed in such a way that that the gas supply to the other burners can only take place when the feed ssua first burner is open. Such a locking of the operating elements for the burners can also contribute to this to prevent the escape of unburned gas.

The invention is illustrated schematically in FIG Drawing illustrated embodiment of the invention explained in more detail will.

The example shown in the drawing is a complete one automatic «bathing actuation device with pushbuttons and electromagnetic ignition of the flare burner. By pressing the Push button 1 is operated via the rod 2 of the lever 3, which is rotatable ■ connected to an electromagnetic additive. The lever takes with its rotation the rod 5, which via the strong compression spring 6, against the pressure of the weak spring 7, pushing down the valve stem 8, A ring 9 is provided in the valve spindle 8, whereas a relatively weaker spring 10 presses over the valve 1. By pressing down the valve spindle 8 closes the valve 11 mf its seats. If you continue to press pushbutton 1, then valve 1? pushed open against the pressure of the spring 13. As a result, gas that flows through the inlet opening 14 from the supply line

access, flow through the passage 15 to the Zttncfle / jmenbrenner 16. Eie 009829/0180

BATH ORIGINAL

The lengths of the rods and levers are chosen so that even further Pressing the push button 1 ignites the spark plug 17. The fact that the distance from the feed opening to the burner mouth in this pilot burner is small, the Push button 1 of the small ignition burner 16 ignited well. if then push button 18 is pressed, gas flows through the valve

i.a temperature-sensitive element 21, which preferably /

19 to the first burner 20, which will ignite immediately, and / a thermocouple

is, is heated, whereby the electromagnet 22 is excited so that the armature 23, which is connected to the main valve 12, is held in the lower position and thus the main valve 12 remains open. First then you can release the push button 1 again, after which the same together with the valve 11 returns to the starting position.

The valve 19 is held open by a schematically indicated pawl 24, so that the push button 18 does not need to be held in the depressed position by hand.

If the push button 18 had already been depressed before the push button 1 would be pressed, the first burner (20) is immediately start to burn when the pilot flame 16 is lit.

After the pilot flame burner 16 and the first main burner

20 have been ignited, the other burners can be used at will, of which two (28 and 32) are shown in the drawing, switch on and off. Pressing aer button 25 opens the valve 26, which is of the scheraatissh the ^ estelten latch 27 is held open so that gas flows to the burner 28 and is ignited there immediately by the pilot burner 20. Likewise, when the button 29 is pressed, the valve 30 will open, which is held by the pawl 31, so that the gas to the burner 32 flows where it will be ignited by the first burner 20 immediately.

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~ ⁵ ~ 1F26011 "

In order to prevent that after the first burner 20 has been extinguished by extinguishing the latch 24 and the other burners 28 and 32

by deleting the pawls 27 and 30, within the time in the temperature-sensitive element;
the KäBÖKÄuppäy 21 is sufficiently cooled to let the spring 13 close the valve 12, gas could flow to the burners 2 # and / or 32 by pressing the buttons 25 and / or 29 so that this gas would not be ignited, is one Device provided, which is indicated schematically with 33, and with which the pressing of the buttons 25 and / or 29 is not possible without the button 18 has been pressed, so that the first burner (20) in any case also receives gas, so that the same The outflowing gas ignites via the pilot flame 16.

\ temperature-sensitive element / the pilot flame only goes out when the 3 & 9ΒΘϊίϊ9 £ Η3 © ί / 21 is sufficient

has cooled down to allow the spring 13 to close the valve 12 so that no more gas can flow out without the button 1 being pressed again is pushed in.

- Expectations -

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Claims (2)

IA-168? Address. 1. Actuator for a gas furnace with at least two burners, which can burn at least partially individually and which can also be combined to work can with the help of a single ignition flame to which the gas is supplied via a thermally secured main valve, thereby marked that the pilot light of the Zündflanuuenburner / with one of the burners, the first burner (20), cooperates, which always ignites first when igniting the stove / OQ "3CO ^ and can work as a pilot burner for the other burners / and Γ22.22) (12) at the same time the thermal safety / of the main valve / controls. 2. Actuating device according to inprach 1, characterized in that that at the same time the thermal Γ22.23) (12) (20) Fuse / of the main valve / controlling first burner / the burner as well which is relatively the smallest performance. 3 · Actuating device according to speeches 1-2, thereby characterized that the gas supply to the first burner '2O), except via the secured main gas valve / via an additional one (1.9)
separate gas shut-off device / takes place. Iy. Actuating device according to claims 1-3, characterized marked that the gas supply to the rest (28.32)
Burning / can only take place if that of the first burner '20) is open. 009829/0180